package cn.z2huo.knowledge.basic.datatype.$integer.$int;

class IntegerTest {

    public static void main(String[] args) {
        Integer a = null;
        System.out.println(a == Integer.valueOf(1));

        System.out.println(Integer.valueOf(1).equals(a));

        if (a instanceof Integer) {
            System.out.println("a is integer");
        }
    }

}
